Authorities said a pilot and wing walker were killed Saturday when a stunt plane crashed at the Dayton Air Show.

Witnesses said the crash happened during the Jane Wicker Wingwalking show, and the plane burned in the grass near a runway. A WLWT.com employee at the show confirmed it was a wing walking plane that crashed.

The employee said the aircraft was inverted with wing walker Jane Wicker on the top wing when the plane suddenly hit the ground. The plane was near the end of its show when the crash occurred just before 1 p.m. The plane was passing about 100 yards from the crowd, from left to right, when the crash happened.

Video of the incident shows Wicker, 44, had just climbed on the bottom of the bottom wing of the biplane and the aircraft was inverted and flying parallel to the audience when it appears the aircraft may have stalled. The plane plunged to the ground right wing first, which is where Wicker was seated.

The aircraft hit the ground and cartwheeled, broke apart and burst into flames. A post on Jane Wicker's Facebook page identified the pilot as 64-year-old Charlie Schwenker. There were no reports of injuries to anyone on the ground. A fire truck extinguished the blaze.

"It's my understanding there was nothing they could do for the victims of the crash once they arrived there," Ohio State Patrol Lt. Mark Nichols said at a press conference.

In videos of the crash, an announcer can be heard saying the plane was traveling at about 110 mph.

"The crowd went silent and I distinctly heard a woman say very softly, 'Oh no,' and that's probably what I was thinking. We do this, we go to air shows and we think it’s not going to happen. You hope it’s not going to happen but these people are doing stunts and sometimes this happens and it doesn’t make it any better. I would have preferred it didn't happen and I didn’t see it," WLWT.com Managing Editor Jay Murdock said. He witnessed the crash.

NBC affiliate WDTN spoke with Wicker Friday.

"I get concerns when certain things are thrown at me, that I'm not ready for. Like if the weather is not what I'm ready for, if it's bumpy, if there's a chance it might rain. Those things concern me, but I'm never nervous or scared, because if I do everything I usually do, everything is going to be just fine," Wicker said Friday.

The Federal Aviation Administration said Wicker was also a contract employee who worked as an FAA budget analyst.

An FAA official said the kind of aircraft that crashed was widely used for pilot training during World War II.

The show was canceled for the rest of Saturday's performances. Tickets from Saturday's events will be honored on Sunday.

"It's important to make sure that everybody understands that performers have a very strong bond and feel a very strong need to continue the show and that's typical of the industry," show organizer Michael Emoff said.

In 2007, veteran stunt pilot Jim LeRoy was killed at the Dayton show when his biplane slammed into the runway while performing loop-to-loops and caught fire.